For converting a numeric string to an int using the parseInt method of the Java Integer class. The parseInt method converts the String to an int, and throws a NumberFormatException if the string can’t be converted to an int type.

public class StringToIntExample {   public static void main (String[] args)   {       String s = "100"; // Numeric String     try     {       int i = Integer.parseInt(s.trim());       System.out.println("int i = " + i);     }     catch (NumberFormatException e)     {       System.out.println("NumberFormatException: " + e.getMessage());     }   } }